Is there a comprehensive list of the grade level for of each of the preludes and fugues (as pairs) Books 1 and 2? Nothing obvious revealed via Google.
Now... how to cancel a 10 minute-old post. Found most of them at the Toronto RCM site. Almost all at "level 10" or A.R.C.T. (Associate) as of 2015 syllabus:
https://files.rcmusic.com/sites/default/files/files/RCM-Piano-Syllabus-2015.pdfpages 80,88.
Topic: The Well-tempered Clavier, Grade levels